using System;
using System.Text;
using System.util;

/*
 * $Id: LangAlt.cs,v 1.3 2008/05/13 11:26:16 psoares33 Exp $
 * 
 *
 * Copyright 2007 by Armin Haberling
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (the "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the License.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999-2005 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000-2005 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
 * provisions of LGPL are applicable instead of those above.  If you wish to
 * allow use of your version of this file only under the terms of the LGPL
 * License and not to allow others to use your version of this file under
 * the MPL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the LGPL.
 * If you do not delete the provisions above, a recipient may use your version
 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE 
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MPL as stated above or under the terms of the GNU
 * Library General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU LIBRARY GENERAL PUBLIC LICENSE for more
 * details.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * http://www.lowagie.com/iText/
 */

namespace iTextSharp.text.xml.xmp {
    public class LangAlt : Properties {

        /** Key for the default language. */
        public const String DEFAULT = "x-default";

        /** Creates a Properties object that stores languages for use in an XmpSchema */
        public LangAlt(String defaultValue) {
            AddLanguage(DEFAULT, defaultValue);
        }

        /** Creates a Properties object that stores languages for use in an XmpSchema */
        public LangAlt() {
        }

        /**
         * Add a language.
         */
        public void AddLanguage(String language, String value) {
            this[language] = XmpSchema.Escape(value);
        }

        /**
         * Process a property.
         */
        protected internal void Process(StringBuilder buf, String lang) {
            buf.Append("<rdf:li xml:lang=\"");
            buf.Append(lang);
            buf.Append("\" >");
            buf.Append(this[lang]);
            buf.Append("</rdf:li>");
        }

        /**
         * Creates a String that can be used in an XmpSchema.
         */
        public override String ToString() {
            StringBuilder sb = new StringBuilder();
            sb.Append("<rdf:Alt>");
            foreach (String s in this.Keys)
                Process(sb, s);
            sb.Append("</rdf:Alt>");
            return sb.ToString();
        }
    }
}